Dasha understands that sooner or later she will be asked a question about where her ex-boyfriend Seryozha disappeared to. It's no joke - getting lost in a multimillion-dollar unfamiliar city without even knowing the language! The French commissioner Trenu gets involved in the case of the disappearance of a Russian tourist. However, Dasha cannot even imagine how her visit to the Parisian police will turn out! Her new boyfriend, Andre, has doubts about the sincerity of her feelings, which greatly hurts Dasha, because trust is one of the facets of love. Misunderstanding becomes a test for both.